<template>
 <transition name="move" @after-leave="onLeave">
     <div class="food" v-show="visible">
       <!-- 滚动组件，评论页面主体 -->
         <cube-scroll ref="scroll" :date="computedRatings">
           <!-- 评论图片 -->
             <div class="food-contetn">
                <div class="image-header">
                    <img :src="food.image">
                    <div class="back" @click="hide">
                      <i class="icon-arrow_lift"></i>
                    </div>
                </div>
                <!-- 相关商品销售信息 -->
                <div class="content">
                    <h1 class="title">{{food.name}}</h1>
                    <div class="details">
                      <span class="sell-count">月售{{food.sellCount}}份</span>
                      <span class="rating">好评率{{food.rating}}%</span>
                    </div>
                    <div class="price">
                      <span class="now">￥{{food.price}}</span><span class="old" v-show="food.oldPrice">￥{{food.oldPrice}}</span>
                    </div>
                    <div class="cartcontrol-wrapper">
                      <cartcontrol @add="addFood" :food="food"></cartcontrol>
                    </div>
                    <transition name="fade">
                      <div @click="addFirst" class="buy" v-show="!food.count || food.count===0">
                        加入购物车
                      </div>
                    </transition>
                </div>
                <!-- 商品信息 -->
                <split v-show="food.info"></split>
                <div class="info" v-show="food.info">
                  <h1 class="title">商品信息</h1>
                  <p class="text">{{food.info}}</p>
                </div>
                <split></split>
             </div>
              <div class="rating">
                <h1 class="title">商品评价</h1>
                <!-- 选择评论组件 -->
                <ratingselect 
                    @select="onSelect"
                    @toggle="onToggle"
                    :selectType="selectType"
                    :onlyContent="onlyContent" 
                    :desc="desc"
                    :ratings="ratings">
                </ratingselect>
                <div class="rating-wrapper">
                  <ul v-show="ratings && ratings.length">
                    <li  v-for="(rating,index) in computedRatings" :key="index" class="rating-item border-1px">
                      <div class="user">
                        <span class="name">{{rating.username}}</span>
                        <img class="avatar" width="12" height="12" :src="rating.avatar">
                      </div>
                      <div class="time">{{formatTime(rating.rateTime)}}</div>
                      <p class="text">
                        <span :class="{'icon-thumb_up':rating.rateType===0,'icon-thumb_down':rating.rateType===1}"></span>{{rating.text}}
                      </p>
                    </li>
                  </ul>
                  <div class="no-rating" v-show="!computedRatings || !computedRatings.length">暂无评价</div>
                </div>
              </div>
         </cube-scroll>
     </div>
 </transition>
</template>
<script>
import popupMixin from "common/mixins/popup"
import split from "components/split/split"
import cartcontrol from "components/cartcontrol/cartcontrol"
import ratingselect from "components/ratingselect/ratingselect"
import ratingsMixin from "common/mixins/ratings"
    export default{
        name:"food",
        mixins: [popupMixin,ratingsMixin],
        props:{
            food:{
                type:Object
            }
        },
        data () {
          return {
            desc: {
              all: '全部',
              positive: '推荐',
              negative: '吐槽'
            }
          }
        },
        created () {
        // $emit触发事件，用来发送，$on监听事件发生
        // created钩子执行的时候未加载dom，如果要执行dom加载后事件需要用$nextTick 
            this.$on("show",()=>{
                // $nextTick   dom改变完成后动作
                this.$nextTick(()=>{
                    // 刷新高度
                    this.$refs.scroll.refresh()
                })
            })
        },
        computed:{
          ratings(){
             return this.food.ratings
          },

        },
        methods:{
          addFirst(event) {
            //第一次添加时将数量count设为1，要使用响应式添加新元素，否则观测不到
            this.$set(this.food, 'count', 1);
            this.$emit('add', event.target);
          },
          addFood(el){
            //发送添加事件给父元素
             this.$emit('add', el);
          },
          onLeave(){
             this.$emit('afterLeave');
          }
        },
        components:{
            split,
            cartcontrol,
            ratingselect
        }
    }
</script>
<style lang="stylus" rel="stylesheet/stylus">
    @import "../../common/stylus/mixin.styl"
    .food
      position: fixed
      left: 0
      top: 0
      bottom: 48px
      z-index: 30
      width: 100%
      background: #fff
      transform: translate3d(0, 0, 0)
      &.move-enter-active, &.move-leave-active
        transition: all 0.2s linear
      &.move-enter, &.move-leave-active
        transform: translate3d(100%, 0, 0)
      .image-header
        position: relative
        width: 100%
        height: 0
        padding-top: 100%
        img
          position: absolute
          top: 0
          left: 0
          width: 100%
          height: 100%
        .back
          position: absolute
          top: 10px
          left: 0
          .icon-arrow_lift
            display: block
            padding: 10px
            font-size: 20px
            color: #fff
      .content
        position: relative
        padding: 18px
        .title
          line-height: 14px
          margin-left:0px
          margin-bottom: 8px
          font-size: 14px
          font-weight: 700
          color: rgb(7, 17, 27)
        .details
          margin-bottom: 18px
          line-height: 10px
          height: 10px
          font-size: 0
          .sell-count, .rating
            font-size: 10px
            color: rgb(147, 153, 159)
          .sell-count
            margin-right: 12px
        .price
          font-weight: 700
          line-height: 24px
          .now
            margin-right: 8px
            font-size: 14px
            color: rgb(240, 20, 20)
          .old
            text-decoration: line-through
            font-size: 10px
            color: rgb(147, 153, 159)
        .cartcontrol-wrapper
          position: absolute
          right: 12px
          bottom: 12px
        .buy
          position: absolute
          right: 18px
          bottom: 18px
          z-index: 10
          height: 24px
          line-height: 24px
          padding: 0 12px
          box-sizing: border-box
          border-radius: 12px
          font-size: 10px
          color: #fff
          background: rgb(0, 160, 220)
          opacity: 1
          &.fade-enter-active, &.fade-leave-active
            transition: all 0.2s
          &.fade-enter, &.fade-leave-active
            opacity: 0
            z-index: -1
      .info
        padding: 18px
        .title
          line-height: 14px
          margin-bottom: 6px
          font-size: 14px
          color: rgb(7, 17, 27)
        .text
          line-height: 24px
          padding: 0 8px
          font-size: 12px
          color: rgb(77, 85, 93)
      .rating
        padding-top: 18px
      .title
        line-height: 14px
        margin-left: 18px
        font-size: 14px
        color: rgb(7, 17, 27)
      .rating-wrapper
        padding: 0 18px
        .rating-item
          position: relative
          padding: 16px 0
          border-1px(rgba(7, 17, 27, 0.1))
          .user
            position: absolute
            right: 0
            top: 16px
            line-height: 12px
            font-size: 0
            .name
              display: inline-block
              margin-right: 6px
              vertical-align: top
              font-size: 10px
              color: rgb(147, 153, 159)
            .avatar
              border-radius: 50%
          .time
            margin-bottom: 6px
            line-height: 12px
            font-size: 10px
            color: rgb(147, 153, 159)
          .text
            line-height: 16px
            font-size: 12px
            color: rgb(7, 17, 27)
            .icon-thumb_up, .icon-thumb_down
              margin-right: 4px
              line-height: 16px
              font-size: 12px
            .icon-thumb_up
              color: rgb(0, 160, 220)
            .icon-thumb_down
              color: rgb(147, 153, 159)

        .no-rating
          padding: 16px 0
          font-size: 12px
          color: rgb(147, 153, 159)
  </style>